| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid catalyst component for olefin polymerization, and a catalyst which can produce an olefinic polymer in an extremely high yield, and particulary a propylene polymer with maintaining a high stereoregularity. SOLUTION: There are provided a solid catalyst component for olefin polymerization and a catalyst, which comprise (a) a magnesium compound, (b) titanium tetrachloride, (c) a phthalic acid diester, and (d) benzenediol or benzenetriol that may be substituted by a 1-10C alkyl group, a 3-10C cycloalkyl group or a halogen atom.
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